function _createSuper(Derived) { return function () { var Super = _getPrototypeOf(Derived), result; if (_isNativeReflectConstruct()) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }

var Util = require('../util');

var Base = require('./base');

var vec2 = Util.MatrixUtil.vec2;

var Circle = /*#__PURE__*/function (_Base) {
  _inheritsLoose(Circle, _Base);

  var _super = _createSuper(Circle);

  function Circle() {
    return _Base.apply(this, arguments) || this;
  }

  var _proto = Circle.prototype;

  _proto.getDefaultCfg = function getDefaultCfg() {
    var cfg = _Base.prototype.getDefaultCfg.call(this);

    return Util.mix({}, cfg, {
      /**
       * 坐标轴的类型
       * @type {String}
       */
      type: 'circle',

      /**
       * 指定刻度之间的间距
       * @type {Number}
       */
      tickInterval: null,

      /**
       * 开始弧度
       * @type {Number}
       */
      startAngle: -Math.PI / 2,

      /**
       * 结束弧度
       * @type {Number}
       */
      endAngle: Math.PI * 3 / 2,
      line: {
        // @type {Attrs} 坐标轴线的图形属性,如果设置成null，则不显示轴线
        lineWidth: 1,
        stroke: '#C0D0E0'
      },
      tickLine: {
        // @type {Attrs} 标注坐标线的图形属性
        lineWidth: 1,
        stroke: '#C0D0E0',
        length: 5
      },

      /**
       * 默认文本距离轴线的距离
       * @type {Number}
       */
      _labelOffset: 5
    });
  };

  _proto.parseTick = function parseTick(tick, index, length) {
    return {
      text: tick,
      value: index / length
    };
  };

  _proto._getCirclePoint = function _getCirclePoint(angle, radius) {
    var self = this;
    var center = self.get('center');
    radius = radius || self.get('radius');
    return {
      x: center.x + Math.cos(angle) * radius,
      y: center.y + Math.sin(angle) * radius
    };
  };

  _proto.getTickPoint = function getTickPoint(value) {
    var self = this;
    var startAngle = self.get('startAngle');
    var endAngle = self.get('endAngle');
    var angle = startAngle + (endAngle - startAngle) * value;
    return self._getCirclePoint(angle);
  };

  _proto.getSideVector = function getSideVector(offset, point) {
    var self = this;
    var center = self.get('center');
    var vector = [point.x - center.x, point.y - center.y];

    if (!Util.isNil(offset)) {
      var vecLen = vec2.length(vector);
      vec2.scale(vector, vector, offset / vecLen);
    }

    return vector;
  };

  _proto.getSidePoint = function getSidePoint(point, offset) {
    var self = this;
    var vector = self.getSideVector(offset, point);
    return {
      x: point.x + vector[0],
      y: point.y + vector[1]
    };
  };

  _proto.getTickEnd = function getTickEnd(start, length) {
    var self = this;
    var tickLine = self.get('tickLine');
    length = length ? length : tickLine.length;
    return self.getSidePoint(start, length);
  };

  _proto.getTextAnchor = function getTextAnchor(vector) {
    var align;

    if (Util.snapEqual(vector[0], 0)) {
      align = 'center';
    } else if (vector[0] > 0) {
      align = 'left';
    } else if (vector[0] < 0) {
      align = 'right';
    }

    return align;
  };

  _proto.getLinePath = function getLinePath() {
    var self = this;
    var center = self.get('center');
    var x = center.x;
    var y = center.y;
    var rx = self.get('radius');
    var ry = rx;
    var startAngle = self.get('startAngle');
    var endAngle = self.get('endAngle');
    var inner = self.get('inner');
    var path = [];

    if (Math.abs(endAngle - startAngle) === Math.PI * 2) {
      path = [['M', x, y], ['m', 0, -ry], ['a', rx, ry, 0, 1, 1, 0, 2 * ry], ['a', rx, ry, 0, 1, 1, 0, -2 * ry], ['z']];
    } else {
      var startPoint = self._getCirclePoint(startAngle);

      var endPoint = self._getCirclePoint(endAngle);

      var large = Math.abs(endAngle - startAngle) > Math.PI ? 1 : 0;
      var sweep = startAngle > endAngle ? 0 : 1;

      if (!inner) {
        path = [['M', x, y], ['L', startPoint.x, startPoint.y], ['A', rx, ry, 0, large, sweep, endPoint.x, endPoint.y], ['L', x, y]];
      } else {
        var innerStartVector = self.getSideVector(inner * rx, startPoint);
        var innerEndVector = self.getSideVector(inner * rx, endPoint);
        var innerStartPoint = {
          x: innerStartVector[0] + x,
          y: innerStartVector[1] + y
        };
        var innerEndPoint = {
          x: innerEndVector[0] + x,
          y: innerEndVector[1] + y
        };
        path = [['M', innerStartPoint.x, innerStartPoint.y], ['L', startPoint.x, startPoint.y], ['A', rx, ry, 0, large, sweep, endPoint.x, endPoint.y], ['L', innerEndPoint.x, innerEndPoint.y], ['A', rx * inner, ry * inner, 0, large, Math.abs(sweep - 1), innerStartPoint.x, innerStartPoint.y]];
      }
    }

    return path;
  };

  _proto.addLabel = function addLabel(tick, point, index) {
    var self = this;
    var offset = self.get('label').offset || self.get('_labelOffset') || 0.001;
    point = self.getSidePoint(point, offset);

    _Base.prototype.addLabel.call(this, tick, point, index);
  };

  _proto.autoRotateLabels = function autoRotateLabels() {
    var self = this;
    var ticks = self.get('ticks');
    var labelRenderer = self.get('labelRenderer');

    if (labelRenderer && ticks.length > 12) {
      // 小于12个文本时文本不旋转
      var radius = self.get('radius');
      var startAngle = self.get('startAngle');
      var endAngle = self.get('endAngle');
      var totalAngle = endAngle - startAngle;
      var avgAngle = totalAngle / (ticks.length - 1);
      var avgWidth = Math.sin(avgAngle / 2) * radius * 2;
      var maxLength = self.getMaxLabelWidth(labelRenderer);
      Util.each(labelRenderer.get('group').get('children'), function (label, index) {
        var tick = ticks[index];
        var angle = tick.value * totalAngle + startAngle;
        var mode = angle % (Math.PI * 2);

        if (maxLength < avgWidth) {
          // 文本的最大宽度大于
          if (mode <= 0) {
            angle = angle + Math.PI;
          }

          if (mode > Math.PI) {
            angle = angle - Math.PI;
          }

          angle = angle - Math.PI / 2;
          label.attr('textAlign', 'center');
        } else {
          if (mode > Math.PI / 2) {
            angle = angle - Math.PI;
          } else if (mode < Math.PI / 2 * -1) {
            angle = angle + Math.PI;
          }
        }

        label.rotateAtStart(angle);
      });
    }
  };

  return Circle;
}(Base);

module.exports = Circle;